This is an amazing hike. Do it in full moon. Start the hike around 11 pm and you will be on top around 5-5:30 before the Sunrise. I did it last year in June. It was too early and cold. There were patched of ice on cables. We did it again last Friday 08/27 in a group of 14, all made it to the top and admitted that it was one of their best experiences. Make sure everybody in your group has done it once during the day and know what are they facing when descending. It could get very cold on top even in summer. Take enough warm close and possibly blanket to use when waiting for sun rise.